We enable nucleic acid labeling bioconjugation
Generic selectors
Exact matches only
Search in title
Search in content
Search in posts
Search in pages
show blocks helper

Product Application for...

Product Detetction by

Product Emission color

Product Enatiomeric structure

Product Kits for..

Product Label Position

Product Linker type

Product Metabolit

Product Modification Type

Product Nucleoside

Product Nucleosites

Product Protection Type

Product Sort by

Product Sugar core

Eterneon² 753 Azide (Cy7TM alternative)

Ultra sensitive Fluorescent Dye to label DNA/RNA

  • Size
  • Catalog No.
  • Price
  • 1.0 mg
  • BCFA-224-1

  • 210 €
  • This special far-red fluorescent dye exhibits advanced click reaction kinetics. Therefore, also less amount of copper can be used in the reaction mixture without any effect on the great reaction efficiency. This effect can be crucial e.g. when copper sensitive enzyme or biomolecules shall be labeled. Once attached to a biomolecule fluorescence microscopy detection can be carried out just like with Cy7, or any other alternative dye.


    H. Jiang et al, Bioconjugate Chem., 2014, 25, 698-706

    C. Uttamapinant, et al., Angew. Chem. Int. Ed., 2012, 51, 5852-56

    A. Geabler et al., J- Lipid. Res., 2016, 57, 1934-47


    • What are the Eterneon dyes?

      Our EterneonTM dyes are a special class of ultra-stable fluorescent dyes. Our long stokes-shift ones even have well separated peaks of absorbance and emission, so it is very convenient to characterize your sample with very sharp and strongly fluorescent signals. These special dyes are oligothiophene based, uncharged and not pH sensitive.

    • Molecular Formula


    • Shelf Life

      12 months unopened after receipt

    • Storage Conditions

      -20 °C, dark

    • Molecular Weight

      1175.35 g/mol

    • Purity

      ≥ 90 % (HPLC)

    • Physical State

      green solid

    • CAS Number


    • Additional name

      Cy7TM alternative; Alexa Fluor 750 alternative; IRDye 750RD alternative; CF Dye 750 alternative; DyLight 750 alternative

    • Absorption (max)

      PBS; pH 7.5: 753 nm

    • Emission (max)

      PBS; pH 7.5: 775 nm

    • Ɛ (max)

      PBS; pH 7.5: 255,000 cm-1M-1

    • Solubility

      Water, DMSO, DMF, MeOH, EtOH

    • Preparation/Handling

      For a 10 mM solution add 85 μL to 1 mg.
      For a 10 mM solution add 425 μL to 5 mg.